Highly sensitive NO2 sensor array based on undecorated single-walled carbon nanotube monolayer junctions

Sunglyul Maeng; Seungeon Moon; Sanghyeob Kim; Hong Yeol Lee; So Jeong Park; Jun Hyuk Kwak; Kang Ho Park; Jonghyurk Park; Youngjin Choi; Florin Udrea; William I. Milne; Byung Yang Lee; Minbaek Lee; Seunghun Hong

doi:10.1063/1.2982428

Highly sensitive NO₂ sensor array based on undecorated single-walled carbon nanotube monolayer junctions

Sunglyul Maeng, Seungeon Moon, Sanghyeob Kim, Hong Yeol Lee, So Jeong Park, Jun Hyuk Kwak, Kang Ho Park, Jonghyurk Park, Youngjin Choi, Florin Udrea, William I. Milne, Byung Yang Lee, Minbaek Lee, Seunghun Hong

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

Using the surface-programmed assembly technique, we have fabricated a uniform array of NO₂ sensors based on undecorated single-walled carbon nanotube (SWNT) monolayer junctions. The sensitivity of the SWNT monolayer network-based sensors to NO₂ gas was investigated at room temperature. We have found that the response of the gas sensors is inversely proportional to the initial conductance of the SWNT network. This behavior is different from conventional gas sensors based on uniform films, and it may be critical for the calibration of sensors in practical applications. An analytical model based on standard percolation theory is proposed to explain this behavior.

Original language	English
Article number	113111
Journal	Applied Physics Letters
Volume	93
Issue number	11
DOIs	https://doi.org/10.1063/1.2982428
Publication status	Published - 2008
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2982428

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title = "Highly sensitive NO2 sensor array based on undecorated single-walled carbon nanotube monolayer junctions",

abstract = "Using the surface-programmed assembly technique, we have fabricated a uniform array of NO2 sensors based on undecorated single-walled carbon nanotube (SWNT) monolayer junctions. The sensitivity of the SWNT monolayer network-based sensors to NO2 gas was investigated at room temperature. We have found that the response of the gas sensors is inversely proportional to the initial conductance of the SWNT network. This behavior is different from conventional gas sensors based on uniform films, and it may be critical for the calibration of sensors in practical applications. An analytical model based on standard percolation theory is proposed to explain this behavior.",

author = "Sunglyul Maeng and Seungeon Moon and Sanghyeob Kim and Lee, {Hong Yeol} and Park, {So Jeong} and Kwak, {Jun Hyuk} and Park, {Kang Ho} and Jonghyurk Park and Youngjin Choi and Florin Udrea and Milne, {William I.} and Lee, {Byung Yang} and Minbaek Lee and Seunghun Hong",

note = "Funding Information: This work was financially supported by the Ministry of Information and Communication (MIC), Republic of Korea, under Project No. A1100–0602–0101. S.H. acknowledges the support from the Seoul R&BD program and the partial support from NRL program (Grant No. R0A–2004–000–10438–0) of KOSEF. ",

year = "2008",

doi = "10.1063/1.2982428",

language = "English",

volume = "93",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "11",

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TY - JOUR

T1 - Highly sensitive NO2 sensor array based on undecorated single-walled carbon nanotube monolayer junctions

AU - Maeng, Sunglyul

AU - Moon, Seungeon

AU - Kim, Sanghyeob

AU - Lee, Hong Yeol

AU - Park, So Jeong

AU - Kwak, Jun Hyuk

AU - Park, Kang Ho

AU - Park, Jonghyurk

AU - Choi, Youngjin

AU - Udrea, Florin

AU - Milne, William I.

AU - Lee, Byung Yang

AU - Lee, Minbaek

AU - Hong, Seunghun

N1 - Funding Information: This work was financially supported by the Ministry of Information and Communication (MIC), Republic of Korea, under Project No. A1100–0602–0101. S.H. acknowledges the support from the Seoul R&BD program and the partial support from NRL program (Grant No. R0A–2004–000–10438–0) of KOSEF.

PY - 2008

Y1 - 2008

N2 - Using the surface-programmed assembly technique, we have fabricated a uniform array of NO2 sensors based on undecorated single-walled carbon nanotube (SWNT) monolayer junctions. The sensitivity of the SWNT monolayer network-based sensors to NO2 gas was investigated at room temperature. We have found that the response of the gas sensors is inversely proportional to the initial conductance of the SWNT network. This behavior is different from conventional gas sensors based on uniform films, and it may be critical for the calibration of sensors in practical applications. An analytical model based on standard percolation theory is proposed to explain this behavior.

AB - Using the surface-programmed assembly technique, we have fabricated a uniform array of NO2 sensors based on undecorated single-walled carbon nanotube (SWNT) monolayer junctions. The sensitivity of the SWNT monolayer network-based sensors to NO2 gas was investigated at room temperature. We have found that the response of the gas sensors is inversely proportional to the initial conductance of the SWNT network. This behavior is different from conventional gas sensors based on uniform films, and it may be critical for the calibration of sensors in practical applications. An analytical model based on standard percolation theory is proposed to explain this behavior.

UR - http://www.scopus.com/inward/record.url?scp=52349098760&partnerID=8YFLogxK

U2 - 10.1063/1.2982428

DO - 10.1063/1.2982428

M3 - Article

AN - SCOPUS:52349098760

SN - 0003-6951

VL - 93

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 11

M1 - 113111

ER -

Highly sensitive NO₂ sensor array based on undecorated single-walled carbon nanotube monolayer junctions

Abstract

ASJC Scopus subject areas

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